# import sys; x = 'runoob'; sys.stdout.write(x + '\n')


'''
注释
注释
'''

"""
注释注释
注释
"""

word = '字符串'
sentence = "这是一个橘子"
paragraph = """ABCDEFGHIJKL"""
print(paragraph[1:5:2])
print(sentence[0:-1])
print(word * 2)
print(sentence + '你好', end="")
print('hello\nrunoob')
print(r'hello\nrunoob')

if ("a" in word):
    print("a in")
elif ("串" in word):
    print("串 in")
else:
    print("None")
